Projector for signaling devices



g- 1931. T. .1. SCOFIELD ET AL 1,818,817

PROJECTOR FOR SIGNALING DEVICES Filed Aug. 5, 1928 2 Sheets-Sheet 1 llyvslv T 0 F75 7 I fyfls w MO /v5.5.5

ATTUHNEYS' g- 1931. 'r. JQSCOFIELD ETAL 18, 17

PROJECTOR FOR SIGNALING DEVICES Filed Aug. 3, 1928 2 Sheets-Sheet 2W/TNESE' Y {9- J&m I

Arramvsrg Patented Aug. 11, 1931 UNITED STATES PATENT orrics THEODORE J.SCOFIELD AND GEORGE A. \VHITE, OF JACKSON, MICHIGAN, ASfiIGNORS TO THESPARKSWITHINGTON COMIANY, OF JACKSON, MICEIGAN, A CORPORATION OF OHIOPROJECTOR FOR SIGNALING DEVICES Application filed August 3, 1928.

This invention relates to a new and improved projector for signalingdevices and the method of manufacturing the same.

In signaling devices particularly those .used on automobiles and thelike it is usual to have a projector attached to the signaling devicefor the purpose of amplifying and directing the sound produced by thesignaling device.

These projectors have usually been approximately straight in form andinasmuch the projectors in order to be efiicient must be of considerablelength a straight projector combined with a signaling device takes upconsiderable room andv in consequence the places on the automobile whereit can be afiixed are to some extent limited.

We have discovered that a projector for a signaling device may be madein a curved shape and if desired this curve may be abrupt so that thesound will issue on a line in a direction at approximately right anglesto the direction from which it issued from the signaling device. Aprojector 01" this 5 form has the advantage that the complete signalingdevice will occupy less linear space which permits it to be installed onparts of the automobile on which a straight projector signaling devicecan not be installed.

Furthermore a 'signaling'device with a curved projector has a greateresthetic appeal to a great many people than has a signaling device witha straight projector.

The main object of our invention is to produce a signaling device inwhich the projector is curved so that the sound will leave the projectorin an angular direction to the direction from which the sound issuedfrom the signaling device itself. Another object is to produce asignaling device with a curved projector which will be pleasing inappearance and with a greater esthetic appeal than the ordinarysignaling device with a straight projector.

Another object is to devise a method by which a projector of thischaracter may be manufactured from sheet metal rather than from castmetal in order that the finished article may be comparatively light inweight.

Other objects and advantages relate to the Serial No. 297,219.

size, shape, arrangement of parts and the method by which they areassembled together all as will more fully appear from the followingdescription taken in connection with the accompanying drawings, inwhich:

Figure 1 is a front elevation of our c0mplete signaling device.

Figure 2 is a side elevation partially broken away and partially insection of the same.

Figure 3 is a section on line 38 of F igure 2.

Figure 4 is a perspective view of the lower portion of the signalingdevice casing.

Figure 5 is a perspective view of the mouth portion of our projector.

Figure 6 is a section on line 66 of Figure 5.

Figure 7 is a perspective view of the collar used in assembling thedevice.

Figure 8 is a perspective view of onehalf of the conduit of ourprojector.

Figure 9 is a perspective view of the other half of the conduit of ourprojector.

Figure 10 is a perspective view of the parts shown in Figures 7, 8 and 9after they have been assembled.

Inasmuch as our invention is directed to a projector for signalingdevices and inasmuch as it may be used with any type of signaling devicewe have here shown only the outside casing 1- of a well-known type ofmotor driven signaling device. The casing 1 has a top portion 2- and abottom portion 3- bolted together as by bolts 4-.. The bottom portion 3,as may best be seen from Figure 4:, has a de pending flange 5 having aseries of spaced vertical slots 6 for a purpose hereinafter to bedescribed.

In forming our projector'7 we first form from sheet metal or otherappropriate material a pair of opposed halves 8 and =--9- of an elbowpipe section. The member -8 is provided on its opposite longitudinal Iedges with grooves -10 and -11 into which the longitudinal edges of themember 9- are received when they are assembled together to make an elbowpipe section. as may best be seen from Figure l0. lVhen members -8-- and-9 have been assembled together they are secured together byspot-welding or other convenient means.

lVe then form a circular collar l2 having an outside diametercorresponding to the inside diameter of the upper par; of the elbow pipesections formed by the assembly of members -8 and 9. Collar l2 ispositioned in the upper portion of the elbow pipe sections formed by theassembly of members -S- and -9 with a portion thereof extending abovethe upper edge of such elbow pipe section as perhaps may best be seenfrom Figure 10 and is then secured in position by spot-welding or otherconvenient means.

e preferably form the lower end of members S- and 9- so that when theyare assembled as shown in Figure 10 the opening formed by the lower endsof members 8 and -9 will be ovoid in shape altho it will be understoodthat such opening may be circular or of any other shape desired.

As perhaps may best be seen from Figures 5 and G the bell portion -l3-of our device is formed preferably from a sheet metal tube having itsouter end flared outwardly as shown at -CL in Figure 6 and is providedwith a circumferential bead 1-lin spaced relation to its inner end. Theshape of the bell member 13-- conforms to the shape of the opening atthe lower end of the conduitformed by the assembly of members 8 and 9and the size of the inner edge 15 of the member -13* is such that itfits inside the conduit formed by the assembly of members 8 and -9- withthe bead 14- abutting against such conduit as perhaps may best be seenfrom Figure When the parts are thus assembled they are secured togetherby spot-welding or other convenient means. For the purpose of appearancewe prefer to form a head around the outer edge of member 13 as shown atb on Figure 6.

\Vhen the parts have been assembled as above described member -3 isassembled therewith by inserting collar 12 into flange 5- of Figure l,the slots 6- permitting the parts of flange 5 therebetween to springslightly outwardly as collar 12 is inserted in flange --5--. Collar 12is provided with an aperture -16 which is placed in registration withaperture 17 in flange -o when the parts are assembled together.

As perhaps may best be seen from Figures 1 and 3 a strap --18 ispositioned around flange -5 and when thus positioned is placed undertension by means of a bolt 19 which extends through the oppositeoutwardly bent ends 20- and 2l of strap 1S. Strap -18 is provided withan inwardly bent prong 22 which extends inwardly through apertures -16and 17- to prevent relative movement of members -3 and 12.

When the parts are thus assembled the upper portion of the signalingdevice -l is placed in position on member -3 and is secured thereto bybolts -l.

It will be understood that the exact shape of our projector -7 both asto the curvature of the main body thereof and the shape of the openingtherein may be varied to a considerable degree without departing fromthe spirit of our invention. It will also be understood that thematerials of which the different parts of our device are constructed mayalso be varied as desired, and it will also be understood that theparticular type of signaling device with which our projector is used isimmaterial provided only that it is the type of signaling device withwhich a projector may be used, for altho we have shown and described aspecific structure and form of part and method of assembling thedifferent parts thereof we do not desire to restrict ourselves to theexact size, shape or relation of parts as various changes may be madewithin the scope of the appended claims.

lVe claim:

1. A projector for a signaling device comprising a throat piececonsisting of opposed halves of an elbow pipe section joined at theiredges, a collar secured in the upper end of the throat piece and havinga portion extending outwardly therefrom, and a bell portion secured tothe other end of the throat piece.

2. In combination with a signaling device a projector comprising athroat piece consisting of opposed halves of an elbow pipe sectionjoined together at their edges, the opening at one end of the throatpiece being approximately ovoid in shape, a collar having one endsecured in the opposite end of the throat piece and having a portionextending outwardly therefrom adapted to be secured in the outlet end ofa signaling device, and a bell portion secured to the ovoid shaped endof the throat piece.

In witness whereof we have hereunto set our hands this 24th day of July1928.

THEODORE J. SCOFIELD. GEORGE A. lVHITE.

